I pulled my water pump the other day for replacement and now my car is running so rich it burns my eyes. I replaced the pump and afterwords let it run with the MAS unhooked to check for leaks, could this be part of the cause? Could I have damaged the CTS? There are no codes stored in the computer after disconnecting and reconnecting the battery. I don't understand. I did not get the opti wet and all sensors are connected. I must be missing something.

 

Make sure the temp sensor is pluged in good. If its not it will run very rich.

 

I checked that first. Is it possible I damaged the CTS when I pulled it from the other pump. I figured it would throw a code or something.

 

Check for a vaccum leak. Maybe the intake elbow isn't on properly?

I had my CTS go bad, and it' didnt throw a code right away. Eventually it did, but at first the car just ran horrible. It would buck and kick to the point of stalling.

Thomas.

 

the CTs will not throw a code in most cases check ressistance at the sensor before you start the car let it warm up then check ress. again the ress. should have droped because this sensor is an NTC ( negative thermal coeficient) when temp increases ress.decreases. a bad cts will keep your car in open loop .also check a stuck open thermostat ive seen that happen so many times after a water pump install .

 

I could not find any vacuum leak at the air tract. The car doesn't buck, but the idle is lower. In January it did start bucking when first started in the morning, but stopped after the weather warmed up. Why would the CTS not throw a code? You would think it would. I reused my old thermostat because it was put in in March. The car doesn't run any hotter or cooler(still 180) after the pump. The only reason I changed the pump was to get rid of unused pipes on the front. I am now running a pump for a 92 vette. I will have to get my hands on a tester to check the CTS.

 

check the thermostat any way . i bought a thermostat from auto zone once it lasted 2 days , before the pintel came flying of it and it was stuck open not going past the 160 mark .use a/c delco if you can .